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Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Assets:
Available for sale debt securities, fair value	$ 214,512	$ 235,054
Mortgage servicing rights, fair value	2,584	2,847
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Available for sale debt securities, fair value	0	0
Mortgage servicing rights, fair value	0	0
Other Observable Inputs (Level 2)
Assets:
Available for sale debt securities, fair value	214,512	235,054
Mortgage servicing rights, fair value	0	0
Significant Unobservable Inputs (Level 3)
Assets:
Available for sale debt securities, fair value	0	0
Mortgage servicing rights, fair value	2,584	2,847
Assets, Total	0
Recurring
Assets:
Assets, Total	217,096	237,901
Recurring | U.S. government and federal agency obligations
Assets:
Available for sale debt securities, fair value	13,364
Recurring | Government sponsored enterprises
Assets:
Available for sale debt securities, fair value	32,459	73,497
Recurring | Obligations of states and political subdivisions
Assets:
Available for sale debt securities, fair value	42,032	32,706
Recurring | Mortgage-backed securities
Assets:
Available for sale debt securities, fair value	126,657	128,851
Recurring | Mortgage servicing rights
Assets:
Mortgage servicing rights, fair value	2,584	2,847
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Assets, Total	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government and federal agency obligations
Assets:
Available for sale debt securities, fair value	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Government sponsored enterprises
Assets:
Available for sale debt securities, fair value	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Obligations of states and political subdivisions
Assets:
Available for sale debt securities, fair value	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities
Assets:
Available for sale debt securities, fair value	0	0
Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage servicing rights
Assets:
Mortgage servicing rights, fair value	0	0
Recurring | Other Observable Inputs (Level 2)
Assets:
Assets, Total	214,512	235,054
Recurring | Other Observable Inputs (Level 2) | U.S. government and federal agency obligations
Assets:
Available for sale debt securities, fair value	13,364
Recurring | Other Observable Inputs (Level 2) | Government sponsored enterprises
Assets:
Available for sale debt securities, fair value	32,459	73,497
Recurring | Other Observable Inputs (Level 2) | Obligations of states and political subdivisions
Assets:
Available for sale debt securities, fair value	42,032	32,706
Recurring | Other Observable Inputs (Level 2) | Mortgage-backed securities
Assets:
Available for sale debt securities, fair value	126,657	128,851
Recurring | Other Observable Inputs (Level 2) | Mortgage servicing rights
Assets:
Mortgage servicing rights, fair value	0	0
Recurring | Significant Unobservable Inputs (Level 3)
Assets:
Assets, Total	2,584	2,847
Recurring | Significant Unobservable Inputs (Level 3) | U.S. government and federal agency obligations
Assets:
Available for sale debt securities, fair value	0
Recurring | Significant Unobservable Inputs (Level 3) | Government sponsored enterprises
Assets:
Available for sale debt securities, fair value	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Obligations of states and political subdivisions
Assets:
Available for sale debt securities, fair value	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities
Assets:
Available for sale debt securities, fair value	0	0
Recurring | Significant Unobservable Inputs (Level 3) | Mortgage servicing rights
Assets:
Mortgage servicing rights, fair value	$ 2,584	$ 2,847

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Fair value of available for sale securities and mortgage servicing rights.

+ References

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Amount of debt securities categorized neither as held-to-maturity nor trading.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
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-URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 320
-Section 50
-Paragraph 2
-Subparagraph (b)-(g)
-URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=68078379&loc=d3e122625-111746

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